CN212907199U

CN212907199U - Composite waterproof power cable

Info

Publication number: CN212907199U
Application number: CN202022170126.7U
Authority: CN
Inventors: 李贻枫; 周丽
Original assignee: Anhui Hongye Instrument Cable Co ltd
Current assignee: Anhui Hongye Instrument Cable Co ltd
Priority date: 2020-09-28
Filing date: 2020-09-28
Publication date: 2021-04-06
Anticipated expiration: 2030-09-28

Abstract

The utility model discloses a composite waterproof power cable, which belongs to the technical field of power devices and comprises a cable core, an aluminum foil, a water blocking ring, an inner liner layer, a metal armor layer and an outer sheath, wherein the cable is sequentially provided with the cable core, the aluminum foil, the water blocking ring, the inner liner layer, the metal armor layer and the outer sheath from inside to outside, the cable core is formed by twisting three insulation wire cores, a polyethylene filling layer is arranged between the cable core and the aluminum foil, the insulation wire cores are sequentially provided with a conductor, a fire resistant layer and an insulation layer from inside to outside, the fire resistance and the wear resistance of the cable are greatly improved by the protection of the outer sheath, the cable can be protected from being damaged and deformed by the armor layer of a steel wire armor structure, the cable can be protected from being bent normally, and can expand when meeting water by the expanded mesh ropes of the water blocking ring and active carbon particles, through the setting of the water blocking wire in the conductor, the radial waterproof effect is played at the cable interface.

Description

Composite waterproof power cable

Technical Field

The utility model discloses an electric power unit technical field specifically is a compound waterproof type power cable.

Background

Most of power cables are laid underground, and the underground cables need to consider the safety of cable operation. In south China, raininess occurs, water molecules invade the inside of the cable, and the cable is seriously damaged by short circuit, performance reduction, short service life and the like. At present, the requirement of users on the environmental resistance of the cable is also correspondingly improved, and particularly the requirement on a power supply guarantee is higher. And the common power cable has no waterproof performance and poor flame retardant effect, and is easy to deform after long-term use, thereby influencing the operation and the service life of the cable.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a compound waterproof type power cable to solve and provide the problem among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: including cable core, aluminium foil, water blocking ring, inner liner, metal armor and oversheath, this cable has set gradually cable core, aluminium foil, water blocking ring, inner liner, metal armor and oversheath from inside to outside, the cable core is formed by three insulation core transposition, be provided with the polyethylene filling layer between cable core and the aluminium foil, insulation core has set gradually conductor, flame retardant coating and insulating layer from inside to outside.

Preferably, the outer sheath is made of low-smoke halogen-free flame-retardant polyolefin material, and the inner cavity of the outer sheath is filled with wear-resistant particles.

Preferably, the metal armor layer is a steel wire armored mesh sheath structure.

Preferably, an expansion rope net is arranged in the water-blocking ring, and the inner cavity of the water-blocking ring is filled with activated carbon particles.

Preferably, the conductor is formed by twisting a plurality of strands of copper wires, and water blocking wires are twisted in gaps among the copper wires.

Compared with the prior art, the beneficial effects of the utility model are that: through the protection of oversheath, the fire resistance and the wearability of very big degree promotion cable, the armor through steel wire armor sets up, can protect the cable normal bending difficult impaired deformation, through the inflation net rope and the active carbon granule that block the water circle, can take place the inflation when meeting water, and the separation moisture plays fore-and-aft waterproof effect, sets up through the silk that blocks in the conductor, plays radial waterproof effect at the cable kneck.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail with reference to the accompanying drawings and detailed embodiments, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor. Wherein:

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is the structure diagram of the insulated wire core of the present invention.

In the figure: the cable comprises an outer sheath 1, a metal armor layer 2, an inner liner 3, a water blocking ring 4, aluminum foil 5, a polyethylene filling layer 6, an insulating layer 7, a fire-resistant layer 8 and a conductor 9.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a compound waterproof type power cable, protection through the oversheath, the fire resistance and the wearability of very big degree promotion cable, armor through steel wire armor structure sets up, can protect the cable normal bending difficult impaired deformation, through the inflation net rope and the active carbon granule that block the water circle, can take place the inflation when meeting water, and the separation moisture plays fore-and-aft water-proof effects, through the silk setting that blocks in the conductor, plays radial waterproof effect at the cable kneck. Referring to fig. 1, the cable comprises a cable core, an aluminum foil 5, a water blocking ring 4, an inner liner 3, a metal armor layer 2 and an outer sheath 1;

referring to fig. 1-2, through the protection of the outer sheath 1, the flame retardancy and wear resistance of the cable are greatly improved, the cable can be protected from being damaged and deformed due to normal bending by the armor layer of the steel wire armor structure, the cable can expand when encountering water by the expansion net rope and the activated carbon particles of the water blocking ring 4, and the water blocking ring blocks water to play a longitudinal waterproof role, and the cable has a radial waterproof role at a cable connector by the water blocking wire in the conductor 9, specifically, the cable is sequentially provided with a cable core, an aluminum foil 5, the water blocking ring 4, an inner liner 3, a metal armor layer 2 and the outer sheath 1 from inside to outside, the cable core is formed by twisting three insulating wire cores, a polyethylene filling layer 6 is arranged between the cable core and the aluminum foil 5, the insulating wire cores are sequentially provided with the conductor 9, a flame retardant layer 8 and an insulating layer 7 from inside to outside, the outer sheath 1 is made, the inner cavity of the outer sheath 1 is filled with wear-resistant particles, the metal armor layer 2 is a steel wire armored net-shaped sheath structure, an expansion rope net is arranged in the water blocking ring 4, the inner cavity of the water blocking ring 4 is filled with activated carbon particles, the conductor 9 is formed by twisting a plurality of strands of copper wires, and water blocking wires are twisted in gaps among the copper wires;

in the specific use, at installation connecting wire's in-process, the silk setting that blocks water in the conductor 9, make cable kneck play radial waterproof effect, prevent that moisture from getting into conductor 9, avoid causing the short circuit, the inflation net rope and the active carbon granule of block water circle 4, can take place the inflation when meeting water, the separation moisture plays fore-and-aft water-proof, the low smoke and zero halogen flame retardant polyolefin material cooperation that oversheath 1 adopted wherein the wear-resisting granule of packing, the fire resistance and the wearability of very big degree promotion cable, the protecting effect of oversheath 1 is greatly improved, the metal armor layer 2 of steel wire armor structure, can protect the cable normal bending difficult impaired deformation, can protect the cable for a long time, and the service life is prolonged.

While the invention has been described above with reference to an embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, as long as there is no structural conflict, the various features of the disclosed embodiments of the present invention can be used in any combination with each other, and the description of such combinations is not exhaustive in the present specification only for the sake of brevity and resource conservation. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims

1. The utility model provides a compound waterproof type power cable, includes cable core, aluminium foil (5), water blocking circle (4), inner liner (3), metal armor (2) and oversheath (1), its characterized in that: this cable has set gradually cable core, aluminium foil (5), water blocking circle (4), inner liner (3), metal armor (2) and oversheath (1) from inside to outside, the cable core is formed by three insulation core transposition, be provided with polyethylene filling layer (6) between cable core and aluminium foil (5), insulation core has set gradually conductor (9), flame retardant coating (8) and insulating layer (7) from inside to outside.

2. The composite waterproof power cable according to claim 1, characterized in that: the material of oversheath (1) is low smoke and zero halogen flame retardant polyolefin material, the inner chamber packing of oversheath (1) has wear-resisting granule.

3. The composite waterproof power cable according to claim 1, characterized in that: the metal armor layer (2) is a steel wire armored mesh sheath structure.

4. The composite waterproof power cable according to claim 1, characterized in that: an expansion rope net is arranged in the water-blocking ring (4), and activated carbon particles are filled in the inner cavity of the water-blocking ring (4).

5. The composite waterproof power cable according to claim 1, characterized in that: the conductor (9) is formed by twisting a plurality of strands of copper wires, and water-blocking wires are twisted in gaps among the copper wires.